Textile apparatus



March 3, 1942. LVIN 2,274,826

TEXTILE APPARATUS Filed March 8, 1941 Q 2 Sheets-Sheet l H 50 28 59 1 i 33 /6 I1;

INVENTORS WILLIAM J. ELVIN BY F' K W SCHULTE 1% l5 ATTORNEYS March 3, 1942.- w, J ELWN Em 2,274,826

TEXTILE APPARATUS Filed March 8, 1941 2 Sheets-Sheet 2 INVENTORS l l WILLIAM J. ELVIN I YF AN /%7(ATTORNEYS Patented Mar. 3, 1942 1 UNITED STATES TEXTILE APPARATUS Delaware Application March 8, 1941, Serial No. 382,304

3 Claims. v(c1. 57-87) 1 This invention relates to winding and twisting devices, and relates more particularly to an attachment for Winding and twisting devices for the purpose of preventing the formation of yarn laps and thereby reducing to a minimum the consequent wastage of yarn.

It is an object of our invention to provide an efiicient and inexpensive means for automatically severing a yarn during winding and twisting operations when an end break occurs, in such a manner as to prevent the formation of a lap on the nip and feed rolls.

Another object of our invention is the provision of an attachment for winding and twisting devices which eliminates the need for waste rollers and minimizes the wast of yarn upon breakage.

Other objects of our invention will appear from the following detailed description and drawings.

In the accompanying drawings, wherein the I preferred embodiments of our invention are shown:

Fig, 1 is a side elevational view showing the attachment of the invention attached to the cross-bar of a winding and twisting device,

Fig. 2 is a plan View of the same,

Fig. 3 is a detail view, taken along the line 3-3 of Fig. 2, on an enlarged scale,

Fig, 4 is a detail view of the yarn guide shown in Figs. 1, 2 and 3,

Fig. 5 is a detail View, on an enlarged scale,

showing the yarn guide, the cutting member and the platen against which the edge of said cutting member bears,

Fig. 6 is a side elevational view of another embodiment of our invention,

Fig. 7 is a detail view of the yarn guide in the embodiment shown in Fig. 6,

Fig. 8 is a side elevational view of another embodiment of our invention, and

Fig. 9 is a detail view of the yarn guide in the embodiment shown in Fig, 8.

Like reference numerals indicate like parts throughout the several views of the drawings.

Referring now to the drawings, and particularly to Figs. 1 and 2 thereof, the device of our invention, generally indicated by the reference character A, is shown attached to a cross-bar ll] of a winding and twisting machine by means of a yoke I I, the device being held in position on said cross bar and against turning thereon by a screw I2. The device A is placed in close proximity to cooperating nip roll l3 and feed roll IA of the winding and twisting machine. The yoke I I supports the structure'proper of the device of our invention which comprises horizontal base l5 in tegral with said yoke, on which base is a bearing l6 comprising the turned-up end of said horizontal base. Extending from yoke H is a bearing H which is aligned with bearing it for receiving a shaft I8 therein. The shaft l8 extends for a substantial distance beyond bearing l1, and between bearings 16 and ll has mounted thereon a collar I9. As is particularly shown in Fig. 3, the collar 19 is provided with flanges 20 and 2!, the latter of which is extended beyond the former and is sharpened to form a cutting edge 22. One end of flange 2| is turned downwardly out of the plane of the cutting edge and "forms an unsharpened lip 23, the purpose of which will hereinafter be described. Collar 19 is adjustably held on shaft l8 by screws 24 which are threaded through flanges 2!] and 2|. Shaft l8 has fixed thereon a rod or wire 25 bent at one end to form a yarn guide 26. The'other end of the wire 25 carries an adjustable counterweight 21 which is held in adjusted position by a screw 28. Integral with horizontal base l5 is an upright member 29 which extends laterally beyond the base If; to form a platen 2911. with which cutting edge 22 cooperates for the cutting operation. The platen 29a is curved at its free end to form a guard 29?) for the cutting edge. A forked yarn guide 31! having an upper fork Sl and a lower fork 32 is attached to upright 29 by a screw The operation of our attachment is as follows: When no yarn is running, counterweight Zion rod 25 rotates shaft It in a clockwise direction causing cutting edge 22 to bear on platen 2911. To put our attachment in operation, a yarn 35, shown in Fig, 5 as coming from a yarn supply package (not shown), is passed inside the upper fork 3i of yarn guide 3i), around lip 23 registered in hole 34 and outside lower fork 32. The yarn then passes through a pigtail guide 38, around rotating nip roll l3 and feed roll it, over yarn guide 26 and then to the winding and twisting apparatus. The running tension of yarn 35 as it passes over guide 26 overcomes theturning moment of counterweight 2'! and forces yarn guide 28 in a downward direction, thus rocking shaft I8 in a counter-clockwise direction. This counterclockwise rotation of shaft l8 draws lip 23 from hole (it, which permits yarn 35 to assume its running position as shown in dot-dash linein Fig. 5. Cutting edge 22 and yarn guide 26 now assume the positionshown in Fig. 1, which they retain during the normal running of the yarn;

The counter-clockwise rotationof shaft i8 is limited by a laterally and circumferentially adjustable stop comprising a collar 31 provided with a lug 3B and held on shaft l8 by a screw 39, said stopcooperating with yoke II to limit the rotation of shaft I8. When the yarn breaks at any point beyond yarn guide 26, the pressure of the yarn thereon is removed, counterweight 27 then rocks shaft I8 and cutting edge 22 is brought against the yarn, as shown in Fig. 3. The cutting edge cooperating with platen 29a severs the yarn before it reaches the nip and feed rolls, thus preventing the same from forming a lap about nip roll l3 or feed roll l4.

In the modification shown in Figs. 6 and '7, the device of our invention, generally indicated by the reference character B, is shown attached to a flanged post 40 mounted on a crossbar 4| of a winding and twisting machine by means of a flange 42 and a screw 43 which is threaded through flange 42 and into a flange 45a of post 40. The device B is placed in close proximity to a cooperating feed roll 44 of the winding and twisting machine. Flange 42 supports the structure proper of the device of our invention which comprises a vertical plate 45 attached to which is a bearing 46 extending horizontally outward. A second bearing 41 is attached to plate 45 and is aligned with bearing 46 for receiving a shaft 48 therein. The shaft 48 extends beyond bearing 47, and between bearings 46 and 41 has mounted thereon a collar 49. Collar 49 is provided with lipped flange i! and blade 5|, the latter of which is extended beyond the former and is sharpened to form a cutting edge 52. Collar 49 is adjustably held on shaft 48 by suitable means (not shown). Beyond bearing 41, shaft 48 has fixed thereon a rod or wire 25 bent at one end to form a yarn guide 26. The other end of the wire 25 carries an adjustable counter-weight 21 which is held in adjusted position by a screw 28. Integral with and at a right angle to vertical plate 45 is a flat plate 53 which extends laterally beneath cutting edge 52 and comprises the platen with which said cutting edge cooperates for the cutting operation. A forked yarn guide 54 having a notched or bent front fork 55 and a rear fork 56 is attached to the under side of flat plate 53 by a screw 51.

The operation of this modification of our attachment is as follows: When no yarn is running, counterweight 27 on rod 25 rotates shaft 48 in a clockwise direction causing cutting edge 52 to bear on plate 53. To put the attachment in operation, a yarn 35, shown in Fig. 6 as coming from a yarn supply package (not shown) is passed under forks 55 and 56 of yarn guide 54, around yarn feed roll 44 and a yarn guide 58 mounted on post 40 by a bolt 59 and a nut 65. From guide 58, yarn 35 is passed over yarn feed roll 44 and over guide 26 and then to the winding and twisting apparatus. The running ten- 63 and a nut 64.

ting edge 52 is brought against the running yarn. The cutting edge 52 cooperates with plate 53 which acts as a platen therefor, and yarn 35 is severed, thus preventing the same from forming a lap about roll 44.

In the modification shown in Figs. 8 and 9, the device of our invention, generally indicated by the reference character C, is shown attached to a cross-bar SI of a winding and twisting machine by means of a flange 62, the device being held in position on said cross-bar by a bolt The device C isplaced in I close proximity to cooperating nip roll [3 and sion of yarn 35 as it passes over guide 25 overcomes the turning moment of counterweight 2! and forces yarn guide 25 in a downward direction, thus rocking shaft 43 in a counterclockwise direction which permits yarn 35 to slip over to its normal running position through the notched or bent portion of fork which acts as a guide, as shown in dot-dash line in Fig. 7. Cutting edge 52 and yarn guide 26 now assume the position shown in Fig. 6, which they retain during the normal running of the yarn. When the yarn breaks at any point beyond or before yarn guide 26, the pressure of the yarn thereon is removed, counterweight 27 then rocks shaft 48 and cutfeed roll l4 of the winding and twisting machine. The flange 62 supports the structure proper of the device which comprises a horizontal base 65 integral with said flange, on which base is a bearing 66. A second bearing 61 is attached to base 65 and is aligned with bearing 66 for receiving a shaft 68 therein. Shaft 68 extends beyond bearing 61, and between bearings 66 and 61 has mounted thereon a collar 69. Collar 69 is provided with flanges I0 and II, the latter of which is sharpened to form a cutting edge I2. Collar 69 is adjustably held on shaft 68 by suitable means (not shown). Beyond bearing 51, shaft 68 has fixed thereon a rod or wire 25 bent at one end to form a yarn guide 25. The other end of the wire 25 carries an adjustable counterweight 21 which is held in adjusted position by a screw 28. Integral with horizontal base 55 is an upright member I3 which extends laterally so as to act as a platen with which cutting edge I2 cooperates for the cutting operation. A forked yarn guide I4 having an upper fork I5 and a lower fork I8 is attached to upright member I3 by a screw I6.

The operation of this modification of our attachment is as follows: When no yarn is running, counterweight 21 on rod 25 rotates shaft 68 in a clockwise direction causing cutting edge 52 to bear on upright member I3. To put the attachment in operation, a yarn 35, shown in Fig. 8 as coming from a yarn supply package (not shown) is passed inside the upper fork I5 of yarn guide 74, across the edge of flange I l, outside the lower fork I5 of the yarn guide, through pigtail guide TI, around nip roll l3 and feed roll I4 and over yarn guide 25. The running tension of yarn 35 as it passes over guide 26 overcomes the turning moment of counterweight 21 and forces yarn guide 25 in a downward direction, thus rocking shaft 48 in a counter-clockwise direction. Cutting edge 12 is lifted from upright I3 and permits yarn 35 to slip over to its normal running position, as shown in dot-dash line in Fig. 9.

Cutting edge I2 and yarn guide 26 now assume the position shown in Fig. 8, which they retain during the normal running of the yarn. When the yarn breaks at any point beyond guide 26, the pressure of the yarn thereon is removed, counterweight 21 then rocks shaft 58 in a clockwise direction and cutting edge I2 is brought against the running yarn. The cutting edge I2 cooperates with upright 13 which acts as a platen therefor, and yarn 35 is severed, thus preventing ghe same from forming a lap about rolls I3 or I It is to be understood that the foregoing detailed description is merely given by way of illustration and that many variations may be made therein without departing from the spirit of our invention.

Having described our invention, what we desire to secure by Letters Patent is:

ing with said cutting member and means including a yarn guide arm fixed to said shaft and having a counterweight attached thereto, said counterweight being adapted to rock the rotatable shaft, to cause the cutting member to move into the path of the running yarn when a break occurs therein and to cooperate with said platen so as to sever the yarn.

2. Apparatus for preventing the lapping of yarn n nip or feed rolls in winding and twisting devices, comprising means for guiding a running yarn along a controlled path, a cuttingmember adapted to be moved into the path of said running yarn comprising a flanged collar, one flange of which is extended beyond the other and sharpened to form a cutting edge, a shaft on which said cutting member is mounted, said shaft having an axis of rotation transverse to the path of said running yarn, means for rotameans comprising a support and a plurality of bearings in which said shaft is journaled on said support, a platen integral with said support adjacent to and cooperating with said cutting member and means including a yarn guide arm fixed to said shaft and having a' counterweight at- 30. tively supporting said shaft, said supporting tached thereto, said counterweight being adapted to rock the rotatable shaft tocause the cutting 3 member to move into the path of the running yarn when a break occurs therein and to cooperate with said platen so as to sever the yarn.

3. Apparatus for preventing the lapping of yarn on nip or feed rolls in winding and twisting devices, comprising means for guiding a running yarn along a controlled path, a cutting a member adapted to be moved into the path of said running yarn comprising a flanged collar, one flange of which is extended beyond the other and sharpened to form a cutting edge and having one corner of said sharpened flange turned out of the plane thereof to form an unsharpened lip, a shaft on which said cutting member is mounted, said shaft having an axis of rotation transverse to the path of said running yarn, means for rotatively supporting. said shaft, said supporting means comprising a support and a plurality of hearings in which said shaft'is journaled on said support, and means for limiting the rotational movement of said shaft mounted thereon, a platen integral with said support adjacent to and cooperating with said cutting memher and having a hole therein in which said unsharpened lip registers, a yarn guide arm fixed to said shaft and having acounterweight attached thereto, said counterweight being adapted to rock the rotatable shaft to cause the cutting member to move into the path of the running yarn when, a break occurs therein and to cooperate with said platen so as to severthe yarn.

WILLIAM J ELVIN.

FRANK W. SCHULTE. 

